We attempt to define the classical propositional logic by use of appropriate derivability conditions called Cn-definitions. The conditions characterize basic properties of propositional connectives.

This is a preview. Log in through your library . Abstract Monomodal logic has exactly two maximally normal logics, which are also the only quasi-normal logics that are Post complete, and they are ...

when thinking about logical agents, we imagine that the agent has a knowledge base (KB for short) that contains logical sentences that describe the state of the world you could think of a KB as a ...